There are four ways to reset the adjustments you made:
1) Go to Sound Enhancer and tap ‘Reset’ at the bottom of the screen. This will reset all adjustments except volume.
2) Marks on individual sliders for volume, Noise Reduction, Speech Focus, and Wind Noise Reduction indicate default settings. Set the sliders to those marks to reset. Treble/middle/bass are default at 0.
3) If you activated a Quick button on the Home screen, simply tap the button again to deactivate.
4) Open and close the battery doors of the hearing aids to restart them. This resets them to the fitted settings.